C#

public class A
{
    public A()
    {
    }
}

public class B : A
{
    public B(int i)
    {
    }
}

A a = new A(); // Compiles OK
B b1 = new B(5); // Compiles OK
B b2 = new B(); // Compile error: No overload for method 'B' takes '0' arguments

public class A
{
    public A(string s)
    {
    }
}

public class B : A
{
    public B(int i)
    {
    }
}

B b = new B(5); // Compile error: No overload for method 'A' takes '0' arguments

public class A
{
    public A(string s)
    {
    }
}

public class B : A
{
    public B(int i) : base(i.ToString())
    {
    }
}

B b = new B(5); // Compiles OK

public MyExceptionClass (SerializationInfo info, StreamingContext context)

George_George wrote:

Why you say "the constructors are not inherited"? When I inherit from a class, all public methods should be inherited and constructor is also inherited and could be called by base keywords. Any comments to clarify?